1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

Why The Radeon Gallium3D Performance Is Down

Michael Larabel

Published on 23 December 2011
Written by Michael Larabel
Page 1 of 4 - 16 Comments

After yesterday's article about the Grinch that stole the Radeon Gallium3D performance, here's three offending commits since Mesa 7.10 that are causing the open-source Radeon Gallium3D driver to run slower than it should.

As shown in yesterday's article, for some games (such as those based on ioquake3 as well as Nexuiz) the current state of Mesa is worse-off performance wise and even when comparing Mesa 7.10 to 7.11 there were also some performance drops discovered with the R300g open-source driver that supports up through the Radeon X1000 (R500) series. The frame-rate drops with the OpenGL games were confirmed on two independent Linux systems.

When seeing the noticeable drops in frame-rate on multiple games and multiple setups, I dug a bit deeper... Well, I fired up the Phoronix Test Suite and put it to work. The Phoronix Test Suite can automatically bisect performance and functional regressions and can be adapted to work for anything -- from the Linux kernel to Mesa to anything else. It can interface with git-bisect and can hook into any test profile for fully automating the process. It also works for finding power regressions and other Linux issues.

The Phoronix Test Suite stack went to work by first finding the cause of the OpenArena performance drop in the Mesa 7.12-devel code-base... Thanks to the fully automated process, I meanwhile enjoyed a wonderful Weißbier while taking care of other Phoronix work. The cause of the OpenArena performance drop was successfully located and is shared on the next page.

<< Previous Page
1
Latest Linux Hardware Reviews
  1. MSI X99S SLI PLUS On Linux
  2. NVIDIA GeForce GTX 970 Offers Great Linux Performance
  3. CompuLab Intense-PC2: An Excellent, Fanless, Mini PC Powered By Intel's i7 Haswell
  4. From The Atom 330 To Haswell ULT: Intel Linux Performance Benchmarks
Latest Linux Articles
  1. Open-Source Radeon 2D Performance Is Better With Ubuntu 14.10
  2. RunAbove: A POWER8 Compute Cloud With Offerings Up To 176 Threads
  3. 6-Way Ubuntu 14.10 Linux Desktop Benchmarks
  4. Ubuntu 14.10 XMir System Compositor Benchmarks
Latest Linux News
  1. Sandusky Lee: Great Cabinets For Storing All Your Computer Gear
  2. Fedora 21 Beta & Final Release Slip Further
  3. Mesa 10.3.2 Has A Couple Bug-Fixes
  4. RadeonSI/R600g HyperZ Support Gets Turned Back On
  5. openSUSE Factory & Tumbleweed Are Merging
  6. More Fedora Delays: Fedora 21 Beta Slips
  7. Mono Brings C# To The Unreal Engine 4
  8. Coreboot Now Has Support For Intel Broadwell Hardware
  9. Enlightenment's EFL 1.12 Alpha Has Evas GL-DRM Engine, OpenGL ES 1.1 Support
  10. GTK+ Lands Experimental Backend For Mir Display Server
Latest Forum Discussions
  1. AMD Radeon VDPAU Video Performance With Gallium3D
  2. HOPE: The Ease Of Python With The Speed Of C++
  3. Updated and Optimized Ubuntu Free Graphics Drivers
  4. Ubuntu 16.04 Might Be The Distribution's Last 32-Bit Release
  5. Linux hacker compares Solaris kernel code:
  6. Advertisements On Phoronix
  7. Users/Developers Threatening Fork Of Debian GNU/Linux
  8. AMD Releases UVD Video Decode Support For R600 GPUs